Radiator for gluing machines



Jan. 1, 1952 R. w. BURNS ETAL RADIATOR FOR GLUING MACHINES Filed Nov. 1, 1947 4 Sheets-Sheet l Jan. l, 1952 R. w. BURNS ETAL 2,580,728

RADIATOR FOR GLUING MACHINES Filed Nov. l, 1947 4 Sheets-Sheetl 2 Ewen 070,6' me v Jan. 1, 1952 R. w. BURNS ETAL RADIATOR FOR GLUING MACHINES 4 Sheets-Sheet 5 Filed Nov. l, 1947 Jan. 1, 1952 R. w. BURNS ETAL 2,580,728

RADIATOR FOR GLUING MACHINES Filed Nov. 1, 1947 4 sheets-sheet 4 This invention relates in general to gluing f Figure l is schematic side elevational'view of machines, for example, to machines of the type a gluing machine embodying radiators or platns described in United States Patent No. 2,408,064, constructedin acordance with our invention;y dated September 24, 1946. Machines of this char- Figure 2 is an enlarged horizontal sectional acter usually include heating or glue-setting 6 view, approximately Von the plane `o`f the line 2-"2 chambers that are formed by two heating platens of Figure 1";

or radiators, one fixed on the bed of the machine Figure 3 is a fragmentary top plan view of and the other vertically movable toward and the upper radiator, taken from approximately from the xed one to form between them a chamthe plane of the line V3'3fof Figure 1, with porber to receive the pieces or objects to be glued. 10 tions'omitted for s iniplicltyi"illustration;"Y A plurality of edge-gluedboards or other objects *Figure 4 vis an enlarged'v side elevational view are continuously fed into said chamber and of the upper radiator asfshown in Figure pressed together edgewse Vunder Asubstantially ."Figure 5 is' a vertical longitudinal vsectional uniform pressure. While the glue is setting. view,` approximately onthe plane of the line 5-#5 Generally, the upper radiatorisvertically movl5 of Figure 3: Y i able to accommodate boards of differentv thick- Figure 6 is a greatly enlarged transverse vertinesses, and also to Vmaintain pressure on the cal sectional view, 'approximately ontheltplanehf' boards to prevent buckling thereof as they are the line 6-6 of Figure 1;- i

moved through the heating chamber between the Figures 7 and 8 are fragmentary sectional'vievvs; two radiators. Y 20 taken approximatelyonthe' planesofzthe lines IIt is necessary thaty the opposed surfaces of the 1,.-1 .anda- 8, respectively, of Figure 3;

upper and lower `radiators be smooth and truly nFigures 9 and 10 are sectional elevational views, planar or flat, so that substantially uniform prestaken approximately on the planes of the lines s ure may be applied to the glued boards through- 9--9 and |0-I 0, respectively, of Figure 3; and out their surface areas, lAccordingly, one object 25 Figure 11 is an enlarged vertical longitudinal of 4our, inventionis to provide a novel and im- Sectional View, approximately 011 the plane '.Of proved vradiatoror platen which shall include thef-line Il--I'I ofFigllreB. means for compensating for warping f 'of'` the ',"For the purpose of illustrating the principles board-engaging surface thereof andpermit adofthe invention we have` shown it embodied in justment of the radiator or platen so `as"toen 30 a machine of the type vthat is described and sure that said surface shall bedsubstantially nat claimed in the copending applicati@ 0f' LlOy or planar,Y Y Quick, led November 1, 1947, Serial No. 783,492, Itis also desirable that the 'board-engaging butobviously the invention may be utilized in or heat exchanging vsurfaces of such radiators other types vof machines. As shown, .the machine shall be eiiiciently and uniformly heatedfand 35 comprises aframeAon whichismountedalower accordingly, another object of our invention is heating element or radiator B with whichxcoto provide a radiator the board-engaging' or heat Operates an upper similar' heating element for exchanging surface of which shalllbe constructed radiator C to form a space or heating chamber and heated in a novel and improved,`simp1e, in- D between them, said upper radiator being .verexpensive and eflicient manner. 40 t'icallyy movably mountedronthe frame of the A further object is to provide a heat exchang machine by any suitable means, such as arms .E

ing radiator or platen which shall includea novel pivotally connected at F on the ends of the frame and 'improved construction and combination of and actuated by pneumatic piston and cylinder a frame, elongated metal barsto form the heat devices G, the arms E having cross `rods .H Aunexchanging surface and heating elements for 45 derlying elevating arms Ion the top of the upper heating' said bars, so that the heat exchanging radiator so that as y,the actuating arms E are surface can ,be easily andvaccuratelyflexed into swung upwardly said rods will abut theelevatng a fiat orplanar condition and to compensate for arms I andvraise the upperradiator while mainwarping, and heat may be applied quickly and .taining it horizontal. A bearing block'K rests on eiiiciently closely 'adjacentsaid heat exchanging 50 the top. of each elevating arm Ia'ndlhas slidable surface. therethrough pull bolts L one end vof each' of '.1 Other objects, advantages .and resultsV of the which is connected'to one'ofthe crossfrodsaH invention .Willbe brought-.out b'yf. the.. following while the other ends arezc'onnected by plates'M dscription invfcon-j unction. with the.. accompany-r between whichy and Athe` vcorresponding-1-lzve'aring iri'fdawilai which "fiflf eff-'Wi 55 lilocleK'farednterposedcompression springs'N'v'f-i;

Boards O having their edges glue-coated are forced into and through the heating chamber D by forcing means P and the adjacent boards within the chamber are held in substantially uniform abutting contact by retarding means Q which yieldingly resists movement of the boards from the chamber by the forcing means.

With this construction, the upper radiator may be elevated relatively to the lower radiator to receive boards of different thicknesses, and the upper radiator may be pulled downwardly to press the boa-rds between the radiators.

Each radiator comprises side and end pieces I and 2 and intermediate cross pieces 3 preferably formed of metal channels, all of said pieces being connected together into a frame as by flexible angle pieces 4 welded at the joints between the respective side, end and'cross pieces. Secured to the bottom flanges of the side pieces, end pieces and cross pieces of the upper radiator in any suitable manner is a platen comprising a plurality of flexible steam pipes 5 that are nested between flexible metal T-bars 6 which extend lengthwise of the radiator. Preferably, the pipes and T-bars are welded to each other and to the frame pieces I, 2 and 3, and the heads or cross portions of the T-bars are disposed in the same horiozntal plane to form a smooth heating or board-engaging surface 1. The pipes are preferably connected at their ends to manifolds 5a which may be connected to any suitable source of heating or cooling fluid.

The lower radiator is similarly formed, having side, end and cross pieces 8, 9 and I0, respectively, but the steam pipes II and T-bars I2 are arranged on the upper flanges of the radiator in opposed relation to the pipes 5 and T-bars 6 of the upper radiator to form a board-engaging surface I3.

In accordance with the invention, the upper radiator is adjustable so as to compensate for warping of the heating surface 'I thereof and to ensure that said surface shall be absolutely fiat or planar. As shown, the side, end and cross pieces of the radiator are slit for portions of their widths from the top flanges to points closely adjacent the lower flanges, as indicated at I4, and an adjusting screw I5 extends tranversely of the open end of each slit and has its endsslidable through blocks I 6 which are secured to the upper flanges of the respective frame pieces in any suitable manner, as by welding. Nuts Il are screwed onto the ends of the screws I5 at opposite sides of the respective blocks I6 for adjusting the screws and for locking them in adjusted positions.

With this construction, it will be observed that by proper manipula-tion of the screws, the frame pieces, T-bars and pipes may be flexed as required to make the heating or board-engaging surface I of the radiator truly flat. It will be observed that each heating pipe is nested between the main and cross flanges of two adjacent T- bars so as to be protected against the pressure applied to the board-engaging surfaces of the radiators. Moreover, the pipes are in direct heattransmitting contact with the T-bars so that heat is efficiently conducted to the board-engaging surfaces 'l and I3. struction contributes substantially to the flexibiilty of the upper radiators and makes the board-engaging surface easily conformable to the surfaces of the boards.

Instead of using T-bars, it will appear to those skilled in the art that ordinary angle bars could Furthermore, the con,

be substituted for the T-bars, each angle bar having one flange secured to the frame of the heating plate and its other flange disposed in substantially a common flat plane with the flanges of the other bars.

Furthermore, while we have described the pipes for steam, obviously other suitable heating or cooling elements might be utilized and hot or cold oil or other fluids could be circulated through the ,u pipes instead of steam. From the foregoing, it

will be observed that the platens embodying the invention could be used for cooling or refrigerating purposes as well as heating purposes.

While we have shown and described the now preferred embodiment of our invention, it should be understood that this is primarily for the purpose of illustrating the principles of the invention and that the structure of the radiator or platen may be widely modified and changed within the spirit and scope of the invention.

Having thus described the invention, what we claim is:

l. A platen having a flat planar object-engaging surface for pressing flat objects between it and another flat surface, said device comprising a rectangular open frame having one side in substantially a fiat plane, a plurality of separate parallel bars secured to said side of said frame and having surfaces in substantially a common flat plane to form said object-engaging surface, said frame and bars being flexible to dispose said object-engaging surface in flat condition, and means for positively flexing said frame and bars to adjust said object-engaging surface and for holding them in adjusted position.

2. Aplaten having a flat planar object-engaging surface for pressing flat objects between it and another ilat surface, said platen comprising a frame, surface-forming means thereon having said object-engaging surface, means for flexing said frame and said surface-forming means to maintain said surface in flat unwarped condition and thus ensure substantially uniform pressure upon objects between said object-engaging surfaces and flexible heating pipes mounted on said frame in heat-conducting contact with said surface-forming means for heating said surface.

3. A platen having a flat planar object-engaging surface for pressing flat objects between it and another flat surface, said platen comprising a rectangular open frame having one side in substantially a flat plane, a plurality of separate parallel bars secured to said side of said frame and having surfaces in substantially a common flat plane to form said object-engaging surface, said frame and bars being exible to dispose said object-engaging surface in flat condition, said bars being T-shaped in cross-section and having their main flanges secured to said side of said frame with their cross flanges disposed in said common substantially flat plane, and flexible heating pipes one of which lies between the main flanges of each two adjacent bars.

4. A platen having a flat planar object-engaging surface for pressing flat objects between it and another flat surface, said platen comprising a rectangular open frame having one side in substantially a flat plane, a plurality of separate parallel bars secured to said side of said frame and having surfaces in substantially a common flat plane to form said object-engaging surface, said frame and bars being flexible to dispose said object-engaging surface in flat condition, said frame being rectangular and formed of side pieces, end pieces and cross pieces secured tcgether by iiexible joints.

5. A platen having a flat planar object-engaging surface for pressing at objects between it and another flat surface, said platen comprising a rectangular open frame having one side in substantially a flat plane, a plurality of separate parallel bars secured to said side of said frame and having surfaces in substantially a common flat plane toform saidobject-engaging surface, said frame and bars being flexible to dispose said object-engaging surface in flat condition, said frame being rectangular and formed of side pieces and end pieces and cross pieces having their opposite ends abutting the respective side pieces, and angle pieces exibly fastening said ends of said end pieces and cross pieces to said side pieces.

6. A platen having a iiat planar object-engaging surface for pressing flat objects between it and another flat surface, said platen comprising a frame, surface-forming means thereon having said object-engaging surface, means for flexing said frame and -said surface-forming means to maintain said surface in flat unwarped condition and thus ensure substantially uniform pressure upon objects between said object-engaging surfaces, said frame being formed of pieces having flanges extending at one edge in a plane parallel to the plane of said object-engaging surface and said pieces are formed with slits extending from the opposite edges to points adjacent said iianges of the respective pieces, and means adjustably connecting the portions of said pieces at opposite sides of each slit for flexing said frame.

7 A platen having a flat planar object-engaging surface for pressing at objects between it and another at surface, said platen comprising a frame, surface-forming means thereon having said object-engaging surface, means for flexing said frame and said surface-forming means to maintain said surface in flat unwarped condition and thus ensure substantially uniform pressure upon objects between said object-engaging surfaces, said frame being formed of pieces having iianges extending at one edge in a plane parallel to the plane of said object-engaging surface and said pieces are formed with slits extending from the opposite edges to points adjacent said flanges of the respective pieces, a block secured at each side of each slit to the corresponding frame piece, and a bolt adjustably connecting said blocks for each slit to permit the corresponding frame piece to be bent at the juncture of said slit and said flange of the corrseponding frame piece.

RAYMOND W. BURNS.

LLOYD QUICK.

REFERENCES CTED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name n Date 273,723 Goff Mar. 13, 1883 561,003 Kinderman May 26, 1896 1,297,219 Merritt Mar. 11, 1919 1,791,064 Murray Feb. 3, 1931 1,793,004 Nygaard Feb. 17, 1931 2,340,607 Maurer Feb. 1, 1944 2,366,588 .Bolling Jan. 2, 1945 2,407,070 Frame Sept. 3, 1946 FOREIGN PATENTS Number Country Date 37,744 Netherlands Feb. 16, 1936 647,018 Germany June 25. 1937 

